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Amber : a aero-interaction honeypot with distributed intelligence

  • Authors: Schoeman, Adam
  • Date: 2015
  • Subjects: Security systems -- Security measures , Computer viruses , Intrusion detection systems (Computer security) , Computer security
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:4716 , http://hdl.handle.net/10962/d1017938
  • Description: For the greater part, security controls are based on the principle of Decision through Detection (DtD). The exception to this is a honeypot, which analyses interactions between a third party and itself, while occupying a piece of unused information space. As honeypots are not located on productive information resources, any interaction with it can be assumed to be non-productive. This allows the honeypot to make decisions based simply on the presence of data, rather than on the behaviour of the data. But due to limited resources in human capital, honeypots’ uptake in the South African market has been underwhelming. Amber attempts to change this by offering a zero-interaction security system, which will use the honeypot approach of decision through Presence (DtP) to generate a blacklist of third parties, which can be passed on to a network enforcer. Empirical testing has proved the usefulness of this alternative and low cost approach in defending networks. The functionality of the system was also extended by installing nodes in different geographical locations, and streaming their detections into the central Amber hive.
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Amoxicillin removal from aqueous media using multi-walled carbon nanotubes

  • Authors: Mohammadi, Ali , Kazemipour, Maryam , Walker, Roderick B , Ansari, Mehdi
  • Date: 2015
  • Subjects: To be catalogued
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/183861 , vital:44076 , xlink:href="https://doi.org/10.1080/1536383X.2013.866944"
  • Description: Multi-walled carbon nanotubes (MWCNT) were used to separate amoxicillin from aqueous media. The parameters affecting amoxicillin adsorption such as pH, temperature, time, interferences of similar molecules, and the amount of adsorbent used were studied. Amoxicillin adsorption using MWCNT was compared to that using Fullerene C60 and activated carbon (AC). The adsorption efficiency of 0.1 and 0.2 g of MWCNT using in a continuous mode were 86.5% and 87.9%, respectively. Evaluation of the adsorbent capacity showed that each gram of MWCNT can absorb 22.9 mg amoxicillin. The effect of pH was studied over the range 2–8 and revealed that adsorption of the amoxicillin at the initial pH of 4.6 was more effective than any other pH. The adsorption of amoxicillin on MWCNT was much greater than Fullerene C60 and AC. Adsorption data showed that they were best fitted to the Langmuir isotherm.
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An analysis of malware evasion techniques against modern AV engines

  • Authors: Haffejee, Jameel
  • Date: 2015
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:20979 , http://hdl.handle.net/10962/5821
  • Description: This research empirically tested the response of antivirus applications to binaries that use virus-like evasion techniques. In order to achieve this, a number of binaries are processed using a number of evasion methods and are then deployed against several antivirus engines. The research also documents the process of setting up an environment for testing antivirus engines, including building the evasion techniques used in the tests. The results of the empirical tests illustrate that an attacker can evade multiple antivirus engines without much effort using well-known evasion techniques. Furthermore, some antivirus engines may respond to the occurrence of an evasion technique instead of the presence of any malicious code. In practical terms, this shows that while antivirus applications are useful for protecting against known threats, their effectiveness against unknown or modified threats is limited.
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An analysis of public equity offerings listed on the Johannesburg Stock Exchange (JSE)

  • Authors: Van Heerden, Gillian
  • Date: 2015
  • Subjects: Stock exchanges -- South Africa -- Johannesburg
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: vital:1119 , http://hdl.handle.net/10962/d1017546
  • Description: The underpricing of initial public offerings (IPOs) and their subsequent low long-run performance represents one of the anomalies observed in primary markets worldwide. However, the depth and breadth of it varies from country to country, and sector to sector. Literature has documented that the phenomenon surrounding the long-run post issue performance of IPOs is not unique and that quite similar patterns can be found regarding firms making seasoned equity offerings (SEOs). This study is an empirical analysis of public equity offerings listed on the Johannesburg Stock Exchange (JSE). Using data for 141 South African IPOs that were listed on the JSE Mainboard from 2001 to 2010, significant short-run underpricing is found. A sector wise analysis of three broad sectors indicated that the ‘other’ sector had the largest IPO underpricing after the first few days of trading. The year-wise analysis is also documented. In the long-run this study showed that IPOs in South Africa underperformed two out of three benchmarks in 36 full months post listing. In contrast, using data for 50 South African SEOs during 2003 to 2010, superior SEO performance is found over a 36-month period when assessed using a size and industry adjusted benchmark. Various cross-sectional and time-series patterns in the aftermarket performance of IPO and SEO firms are also documented
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An analysis of the certificate of the theory of accounting knowledge and knower structures : a case study of professional knowledge

  • Authors: Mkhize, Thandeka Fortunate
  • Date: 2015
  • Subjects: Accounting -- Study and teaching (Higher) , Dropout behavior, Prediction of , Knowledge, Theory of , Knowledge and learning , Critical realism , Education -- Philosophy , Educational sociology
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:2057 , http://hdl.handle.net/10962/d1019771
  • Description: This research project explores issues around the poor throughput and high dropout rate in the Certificate of the Theory of Accounting (CTA) by focusing on Accounting knowledge as an object of study. The CTA was identified as a serious block in the steps that one needs to go through on the journey to becoming a Chartered Accountant. Having a clear understanding of Accounting knowledge can lead to finding ways that can make the subject more accessible to students from diverse backgrounds. This study contributes to understanding Accounting knowledge at the CTA level with the aim of clearly delineating its legitimate knowledge and knower structures. It answers the following two research questions: • What constitutes legitimate knowledge structures in the CTA? • What constitutes legitimate knower structures in the CTA? Academics from nine universities and representatives of the South African Institute of Chartered Accountants (SAICA) participated in this study. Data was collected through interviews, observation and document analysis. Eighteen CTA lecturers and two members of the SAICA management team were interviewed. Three universities provided documents on their practices, which included learner guides, examination papers, suggested answers, lecture notes, tutorials and other curriculum documents for each of the four CTA subjects. SAICA provided the competency framework and examinable pronouncements. A conference that was jointly hosted by SAICA and International Financial Reporting Standards (IFRS) Foundation was observed. This study used Critical Realism as its ontological underpinnings and Legitimation Code Theory (LCT) as its substantive theory. It used the Specialisation and Autonomy principles of LCT to analyse the data. Specialization establishes the ways agents and discourses within a field are constructed as special, different or unique and thus deserving of distinction and status (Maton, 2014). The principle of Autonomy is concerned with the extent to which the field is self-governing and can do things of its own free-will (Maton, 2004). The study found that the CTA has a hierarchical knowledge structure, which means that when new knowledge is created in Accounting it is integrated into existing knowledge, resulting in coherent and integrated knowledge. CTA also has a hierarchical curriculum structure. While horizontal curriculum structures evolve through the replacement of existing knowledge by new approaches and content, a hierarchical curriculum typically grows through integration and subsumption of new knowledge into pre-existing knowledge and it relies on the acquisition of knowledge developed in previous modules or levels of study.
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An analysis of the development model for ex-farmworkers and adjacent communities in the Indalo association of private game reserves in the Eastern Cape

  • Authors: Tessendorf, Samantha Millicent
  • Date: 2015
  • Subjects: Game reserves -- South Africa -- Eastern Cape , Agricultural laborers -- South Africa -- Eastern Cape , Land reform -- South Africa -- Eastern Cape , Land use -- South Africa -- Eastern Cape , Land use -- Citizen participation , Rural development -- South Africa -- Eastern Cape , Rural development -- Citizen participation
  • Language: English
  • Type: Thesis , Masters , MSocSc
  • Identifier: vital:3399 , http://hdl.handle.net/10962/d1018547
  • Description: Over the past fifteen years there has been an extensive conversion of land use from traditional farming practices to conservation and private game reserves. It has been suggested by Langholz and Kerley (2006:2) that privately owned preserved areas can engage in ecotourism initiatives by protecting biodiversity, succeeding financially and contributing to social upliftment. However, ecotourism has to operate within the context of historical land dispossession of the majority black population and current land reform initiatives to address this problem. In view of the economic, social and environmental importance of ecotourism based private game reserves (PGRs) in South Africa, particularly the Eastern Cape, the main goal of this research is to examine the Indalo association of private game reserves in the Eastern Cape Province’s development model for ex-farmworkers and adjacent communities. This was done through a literature survey and analysis of existing studies and by interviewing the managers of the Indalo PGRs and a few farmworkers to get their opinions of the tension between what they are doing and the imperatives of land reform. This involved an exploration of their community development work, particularly around issues of job creation, participation in decision-making, capacity building and sustainability. The thesis comes to the following conclusions. The first is that the establishment of PGRs have a significant positive impact on the local areas in which they are established. As a land-use, ecotourism based game reserves are an economically and ecologically desirable alternative to other land uses. Therefore the ecotourism based private game reserve industry with its extensive community development focus for farmworkers and local communities is a viable and sustainable alternative to conventional land reform. The second is that the Indalo PGRs development work has built capacity in the communities it has served. However, community participation, particularly in decision-making is limited and needs more attention if productive and sustainable development is to be achieved. Lastly, communities rely heavily on external support for their development and upliftment. However, the majority of the PGRs have/or are putting measures in place to ensure the continuation of community development projects to ensure the long-term sustainability of projects.
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An analysis of the income tax consequences resulting from implementing the Income Tax Bill (2012) in Zimbabwe

  • Authors: Kanyenze, Rumbidzai
  • Date: 2015
  • Subjects: Income tax deductions -- Zimbabwe , Income tax -- Law and legislation -- Zimbabwe
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: vital:914 , http://hdl.handle.net/10962/d1017536
  • Description: The Income Tax Bill (2012) proposes certain changes to the existing Income Tax Act that will impact on the method used to determine the taxable income of a taxpayer in Zimbabwe. Therefore, it is important to understand the tax consequences the Income Tax Bill creates for the taxpayer. The research aimed to elaborate on and explain the tax consequences that will arise as a result of applying the Income Tax Bill in Zimbabwe. The research was based on a qualitative method which involved the analysis and the interpretation of extracts from legislation and articles written on the proposed changes. The current “gross income” of a taxpayer consists of amounts earned from a source within or deemed to be from within Zimbabwe The proposed changes to the Act will change the tax system to a residence-based system, where resident taxpayers are taxed on amounts earned from all sources. Therefore, the driving factor which determines the taxability of an amount will become the taxpayer’s residency. Clause 2 of the proposed Act provides that income earned by a taxpayer should be separated into employment income, business income, property income and other specified income. This will make it unnecessary to determine the nature of an amount because capital amounts will be subject to income tax. The current Act provides for the deduction of expenditure incurred for the purpose of trade or in the production of income. Section 31(1)(a) of the proposed Act will restrict permissible deductions to expenditure incurred in the production of income. Consequently, expenditure not incurred for the purpose of earning income will no longer be deductible when the Income Tax Bill is implemented. The proposed Income Tax Act will increase the taxable income of a taxpayer as it makes amounts that are not currently subject to tax taxable, whilst restricting the deductions claimable.
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An analysis of the risk adjusted returns of active versus passive South African general equity unit trusts during varying economic periods: an individual investor's perspective

  • Authors: Ferreira, James Stuart
  • Date: 2015
  • Subjects: Mutual funds , Global Financial Crisis, 2008-2009 , Risk assessment , Financial crises -- South Africa , Portfolio management , Financial planners
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: vital:1207 , http://hdl.handle.net/10962/d1019753
  • Description: This thesis used the events of the 2007 financial crisis as a means of being able to add to the research already done on South African unit trusts. The objective was to study the risk-adjusted performance of South African general equity unit trusts against the market during the period between 2005 and 2014. This period took into account the bull market preceding the financial crisis, the market crash of 2007 and the subsequent market recovery that followed. Data was obtained online through the I-Net BFA data base and included 161 general equity unit trusts that contained a full data set. In addition to the general equity unit trusts, the Satrix40 was studied to compare a passive unit trust against those that are actively managed. The 10 year Government bond was also used as a risk-free rate to add to the comparisons of performance results. The Sharpe, Treynor and Jensen measures were applied to the data with the results adding more support to the opinions that markets are fairly efficient and active investment strategies are being challenged by consistently well performing passive investments. Throughout the duration of the study, taking into account the varying economic cycles, the Satrix40 passive investment showed the best average overall return on simple return calculations as well as during the risk-adjusted measurements. In support of active investment management, unit trusts showed their best relative performance figures during the period of the financial crisis. This suggested that active financial managers were able to make the active calls necessary to weather the storm of the financial crisis. While the study did have its limitations, the results it produced are intended to offer investors further knowledge in enabling them to make more educated investment decisions in the future.
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An analysis of the risk exposure of adopting IPV6 in enterprise networks

  • Authors: Berko, Istvan Sandor
  • Date: 2015
  • Subjects: International Workshop on Deploying the Future Infrastructure , Computer networks , Computer networks -- Security measures , Computer network protocols
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:4722 , http://hdl.handle.net/10962/d1018918
  • Description: The IPv6 increased address pool presents changes in resource impact to the Enterprise that, if not adequately addressed, can change risks that are locally significant in IPv4 to risks that can impact the Enterprise in its entirety. The expected conclusion is that the IPv6 environment will impose significant changes in the Enterprise environment - which may negatively impact organisational security if the IPv6 nuances are not adequately addressed. This thesis reviews the risks related to the operation of enterprise networks with the introduction of IPv6. The global trends are discussed to provide insight and background to the IPv6 research space. Analysing the current state of readiness in enterprise networks, quantifies the value of developing this thesis. The base controls that should be deployed in enterprise networks to prevent the abuse of IPv6 through tunnelling and the protection of the enterprise access layer are discussed. A series of case studies are presented which identify and analyse the impact of certain changes in the IPv6 protocol on the enterprise networks. The case studies also identify mitigation techniques to reduce risk.
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An analysis of the tax consequences of the double tax agreement between South Africa and the Democratic Republic of Congo

  • Authors: Mkabile, Nwabisa
  • Date: 2015
  • Subjects: Double taxation -- South Africa , Double taxation -- Congo (Democratic Republic) , Income tax -- South Africa -- Foreign income , Income tax -- Congo (Democratic Republic) -- Foreign income
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: vital:916 , http://hdl.handle.net/10962/d1017539
  • Description: As a result of the different tax systems adopted by countries, foreign-sourced income earned by taxpayers may be subject to double taxation. This may therefore impede cross-border trade and investment. Double taxation relief is provided unilaterally, in terms of a country’s domestic laws or bilaterally in terms of Double Taxation Agreements. South African residents earning income from the Democratic Republic of Congo may be subject to tax in both countries. To eliminate such double taxation the South African Income Tax Act, No 58 of 1962, provides for unilateral relief from double taxation in the form of exemptions, rebates and deductions. The double tax agreement between South Africa and the Democratic Republic of the Congo came into effect recently and double taxation relief for South African residents is now also available in terms of tax treaty law. The objective of the research was to determine whether the combination of the unilateral measures and the double tax agreement provide relief in respect of all types of income earned by South African residents in the Democratic Republic of the Congo. It was concluded that the double tax agreement, together with the unilateral relief provided for in the Income Tax Act will grant relief for all types of income earned by South African residents in the Democratic Republic of the Congo.
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An assessment of chlorophyll-a concentration spatio-temporal variation using Landsat satellite data, in a small tropical reservoir

  • Authors: Dalu, Tatenda , Dube, Timothy , Froneman, P William , Sachikonye, Mwazvita T B , Clegg, Bruce W , Nhiwatiwa, Tamuka
  • Date: 2015
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/68042 , vital:29189 , https://doi.org/10.1080/10106049.2015.1027292
  • Description: Publisher version , Traditional approaches to monitoring aquatic systems are often limited by the need for data collection which often is time-consuming, expensive and non-continuous. The aim of the study was to map the spatio-temporal chlorophyll-a concentration changes in Malilangwe Reservoir, Zimbabwe as an indicator of phytoplankton biomass and trophic state when the reservoir was full (year 2000) and at its lowest capacity (year 2011), using readily available Landsat multispectral images. Medium-spatial resolution (30 m) Landsat multispectral Thematic Mapper TM 5 and ETM+ images for May to December 1999–2000 and 2010–2011 were used to derive chlorophyll-a concentrations. In situ measured chlorophyll-a and total suspended solids (TSS) concentrations for 2011 were employed to validate the Landsat chlorophyll-a and TSS estimates. The study results indicate that Landsat-derived chlorophyll-a and TSS estimates were comparable with field measurements. There was a considerable wet vs. dry season differences in total chlorophyll-a concentration, Secchi disc depth, TSS and turbidity within the reservoir. Using Permutational multivariate analyses of variance (PERMANOVA) analysis, there were significant differences (p < 0.0001) for chlorophyll-a concentration among sites, months and years whereas TSS was significant during the study months (p < 0.05). A strong positive significant correlation among both predicted TSS vs. chlorophyll-a and measured vs. predicted chlorophyll-a and TSS concentrations as well as an inverse relationship between reservoir chlorophyll-a concentrations and water level were found (p < 0.001 in all cases). In conclusion, total chlorophyll-a concentration in Malilangwe Reservoir was successfully derived from Landsat remote sensing data suggesting that the Landsat sensor is suitable for real-time monitoring over relatively short timescales and for small reservoirs. Satellite data can allow for surveying of chlorophyll-a concentration in aquatic ecosystems, thus, providing invaluable data in data scarce (limited on site ground measurements) environments.
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An assessment of e-tolling as a method of financing Gauteng roads

  • Authors: Ponter, Lloyd Anthony
  • Date: 2015
  • Subjects: Toll roads -- Taxation -- South Africa -- Gauteng , Electronic Road Pricing System -- South Africa -- Gauteng , Toll roads -- South Africa -- Gauteng -- Cost effectiveness
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: vital:912 , http://hdl.handle.net/10962/d1017185
  • Description: E-tolling was recently implemented on roads in Gauteng, South Africa. This gave rise to a great deal of protest by road users and a court battle between the South African National Roads Agency (SANRAL) and the Opposition to Urban Tolling Alliance, a body representing road users. The e-tolling system was criticised at various levels and on numerous grounds, some financial and others appearing to be emotional. This thesis attempted to analyse the various grounds for objection against the system, the main goal of the research being to analyse e-tolling in Gauteng to ascertain whether or not the introduction of e-tolling was justified or whether an alternative method of taxation to pay for the upgrading of Gauteng roads would have been more cost-effective. Secondary data in the form of documents from multiple sources was used in the analysis, including an Economic Impact Assessment that was one of the key inputs into the decision to introduce e-tolling. It was found that there are multiple problems plaguing the e-toll system and e-tolling is not the most cost-effective taxation method of paying for Gauteng roads. Using a fuel levy or general tax revenue available to the National Treasury were both found to be more cost-effective methods as they would have achieved the same result (repairing and upgrading specific Gauteng roads), at a cost of R20,0913 billion less than e-tolling. It was suggested that the best taxation method/s to pay for the roads would have been using a fuel levy and general tax revenue as the primary funding methods, with vehicle licensing fees and long distance toll roads as secondary methods to aid the primary methods.
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An Assessment of the Effect of Rotenone on Selected Non-Target Aquatic Fauna

  • Authors: Dalu, Tatenda , Wasserman, Ryan J , Jordaan, Martine , Froneman, P William , Weyl, Olaf L F
  • Date: 2015
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/124240 , vital:35579 , https://doi.org/10.1371/journal.pone.0142140.g001
  • Description: Rotenone, a naturally occurring ketone, is widely employed for the management of invasive fish species. The use of rotenone poses serious challenges to conservation practitioners due to its impacts on non-target organisms including amphibians and macroinvertebrates. Using laboratory studies, we investigated the effects of different rotenone concentrations (0, 12.5, 25, 37.5, 50, 100 μg L-1) on selected invertebrate groups; Aeshnidae, Belostomatids, Decapods, Ephemeroptera, Pulmonata and zooplankton over a period of 18 hours. Based on field observations and body size, we hypothesized that Ephemeropterans and zooplank- ton would be more susceptible to rote none than Decapods, Belostomatids and snails. Experimental results supported this hypothesis and mortality and behaviour effects varied considerably between taxa, ranging from no effect (crab Potamonuates sidneyi) to 100% mortality (Daphnia pulex and Paradiaptomus lamellatus). Planktonic invertebrates were par- ticularly sensitive to rotenone even at very low concentrations. Future research should investigate the recovery time of invertebrate communities after the application of rotenone and conduct field assessments assessing the longer term effects of rotenone exposure on the population dynamics of those less sensitive organisms.
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An empirical study on staff turnover and retention within Eskom : Eastern Cape Operating Unit

  • Authors: Chibba, Rajesh Chagan
  • Date: 2015
  • Subjects: Eskom (Firm) , Labor turnover -- South Africa -- Eastern Cape , Employee retention -- South Africa -- Eastern Cape , Job satisfaction -- South Africa -- Eastern Cape , Career development -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: vital:847 , http://hdl.handle.net/10962/d1017514
  • Description: This research paper is broken up into three sections, namely an evaluation report, a literature review and a description of the research methodology. The evaluation report section is an assessment of the factors that could contribute to staff leaving the organisation and why staff would choose to remain with the organisation. The Distribution Division of Eskom is divided into nine separate Operating Units (OU's), in line with the nine Provinces. According to an Eskom Human Resource Manager (Mjali, 2013), as at March 2012 there were 2231 employees in the Easter Cape Operating Unit, while the staff turnover for the same period was 4.53%. Of the 101 staff that had resigned for the period 01 April 2011 to 31 March 2012, there were 27 transfers, 26 resignations and 30 retirements. The balance of 18 staff that left was due to dismissals and deaths. While the statistics suggest a healthy level of staff turnover at present, given the current pressures that Eskom employees are under, it is important to investigate their future intentions and to see what Eskom can do to continue to retain their services. The literature relating to staff turnover and retention was examined to determine the meaning of the terms retention and turnover and to review the relevant turnover topics that were emerging from the exit interview data. The research conducted was quantitative in nature, and a questionnaire was distributed to all managerial staff within the Eastern Cape Operating Unit of Eskom. The questionnaire was sent electronically to the participants via email with the link to the questionnaire. Participants were requested to respond on questions relating to factors on turnover and retention, and the responses were used to assess employee's intention to either remain with the organisation or to leave. The feedback received was analysed with the use of data analysis in Microsoft Excel (2010). The results of the research showed that there were two distinct themes related to employees' intention to remain with the organisation, namely job satisfaction and career development. On the other end of the scale, themes which would cause staff to want to leave the organisation were the performance management system of the organisation, not being listened to (i.e. to the ideas and views of staff) and leadership (i.e. the way the organisation was being led). Recommendations are made to management. The study also recommends future research that can be done to get greater insight into factors relating to staff turnover and retention. A detailed review of the literature is included in Section two of the report. Only essential components of the literature are included in Section one of report. Section three of the report provided a detailed description of the research design and the research procedure that was followed.
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An ergonomics intervention study into the physiological, perceptual and productivity effects of three citrus harvesting bag designs in the Eastern Cape of South Africa : a combined laboratory and field approach

  • Authors: Bassey-Duke, Elizabeth Misan
  • Date: 2015
  • Subjects: Citrus -- Harvesting -- South Africa -- Eastern Cape , Lifting and carrying -- South Africa -- Eastern Cape , Manual work -- South Africa -- Eastern Cape , Blue collar workers -- South Africa -- Eastern Cape , Work -- Physiological aspects , Human mechanics
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:5176 , http://hdl.handle.net/10962/d1018908
  • Description: Background: Agriculture plays a vital role in the economy of any industrially developing country, including South Africa. In the Eastern Cape of South Africa citrus farming is a significant contributor to the local economy (Johnson et al., 2005). The harvesting phase of citrus farming is performed manually and exposes workers to physical risks, which can lead to the development of musculoskeletal disorders. In particular, the standard harvesting bag comprises of a single shoulder strap and promotes asymmetrical load carriage which results in shoulder and lower back pain complaints. The current study compared the physiological (EMG), perceptual (RPE), usability (PUEU) and productivity effects of two new harvesting bag designs (a hip belt and a backpack bag design) to the standard harvesting bag design. This was performed in a laboratory as well as a field setting. Methods (Laboratory phase): 36 participants (12 males and 24 females) were assigned to one worker group. The “tall ladder worker” group was comprised of only males and the “step ladder worker” and “ground worker” group of females. Each participant was required to simulate a citrus harvesting task while utilizing each of the bag designs on different days. On each day/test session, participants performed three harvesting cycles. Muscle activity was measured throughout the entire testing session and RPE were recorded at the end of each cycle. Results (Laboratory phase): The EMG and RPE results indicate that the backpack design was the most ideal design to reduce asymmetry, while the standard harvesting bag design was the worst. Although not significant, there was greater muscle asymmetry (p=0.109) and a significantly higher perceived exertion when using the standard bag (p=0.0004), in comparison to using the backpack. Methods (Field phase): 17 Xhosa-speaking citrus harvesters (6 females and 11 males) participated in this study. Each harvester worked with one of the three bag designs on a different day. Productivity of each worker was assessed every hour by recording the number of bags filled with fruit and at the end of the shift. A Perceived Usefulness & Ease of Use questionnaire was presented to each participant to obtain feedback on worker acceptance to the new bag designs. Results (Field phase): A general trend in support of the hip belt bag design over the other two bag designs were found, even within the different worker demographic groups (age, sex and worker experience). The workers perceived less exertion (7.98 ± 1.86) and were more productive (9.90 ± 2.11 bags/hour) when using the hip belt design; they also found this bag the most useful (1.02 ± 0.09) and easy to use (1.07 ± 0.25). In contrast, the backpack bag design had significantly poorer responses when compared to the other two bag designs and this was evident in all the dependent variables assessed (RPE, productivity and PUEU). Conclusion: The results from the laboratory phase supported the expectation that the backpack bag design reduces asymmetry and hence, is more suitable than the standard harvesting bag. However, results from the field show that the hip belt bag design was the most preferred and the backpack was the least preferred. Bao & Shahnavaz (1989) highlight the need for ergonomics researcher to convey laboratory findings into the field context. However, as shown by the current study, there are numerous challenges associated with field work, making it difficult for laboratory findings to be successfully conveyed to the field. Limitations and Recommendations: For the laboratory phase of the project, no biomechanical and cardiovascular responses were assessed. However, for a holistic approach, these variables should be considered in future studies. Due to high variability from one harvesting cycle to another, more than three harvesting cycles should also be performed to accurately replicate the harvesting process as done in the field over extended durations of time. For the field phase, data should be collected from more than one citrus farm and thus a larger sample size could be obtained. This would improve the validity of the study. In addition to this, data should be collected for a full working day, especially if environmental conditions are not a hindrance, as well as for a whole season, since workloads vary, depending on the time of the harvesting season. , Name on Graduation Programme: Bassey-Duke, Elizabeth Missan
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An evaluation of change communication in ensuring the sustainability of change at Barclays Africa's first "green" building

  • Authors: Magubane, Nokuzola
  • Date: 2015
  • Subjects: Barclays Bank , Sustainable buildings -- South Africa -- Johannesburg , Organizational change -- South Africa -- Johannesburg , Communication in organizations
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: vital:849 , http://hdl.handle.net/10962/d1017517
  • Description: The purpose of the study was to conduct an evaluation on the effectiveness of the change communications distributed to the occupants of Barclays Towers West, Barclays Africa‟s first green building, in ensuring the sustainability of the change after the move into the building. In addition, recommendations are made to improve the change communications directed towards the building occupants to ensure the sustainability of the change and for future moves to green buildings. The research paper is made up of the following three distinct sections: Section One – Evaluation Research Report: this section outlines the organisational and research context for the study, the objectives of the research and rationale for conducting the research. A brief overview of the key theories and models on change communication that were utilised in the study are discussed, and definitions of important terms are presented. The research methodology is also described which includes an explanation on the evaluation research approach utilised as well as the use of both qualitative and quantitative data in the study. In addition, the results from the research conducted are presented, based on three data collection methods utilised: document analysis, semi-structured interviews and a survey. The results are then analysed and discussed in relation to the literature reviewed on change communication. Recommendations are made on improvements that can be made to the change communications to ensure the sustainability of the change. Section Two – Literature Review: the literature, theories and important concept definitions of organisational change management, change sustainability, change communication and green buildings which are relevant for the research topic and have been used as the theoretical base of the study are explored in this section. A key component of the literature review is the description of the change communication theories and models: communication theory, Armenakis, Harris and Field (2007) Model, and the Barrett (2002) Model. An understanding of the theories and models is imperative, as the effectiveness of the change communications after the move into Barclays Towers West is assessed based on the elements of the change communication theories and models. Section Three – Research Methodology: the research methodology for the study is described in this section. Specifically, the research aims and objectives, the research paradigm, the population and sampling, data collection, data analysis and ethical considerations are outlined. A key component of the section is the explanation on how the data was collected and analysed in the study and the sequence. The post move communications and artefacts and meeting presentations were collected first. The qualitative data was analysed and used to determine the questions for the semi structured interviews. Semi-structured one on one interviews were then conducted. The qualitative data and the change communication theories and models used in this study were used to determine the questions for the online survey. An online survey tool was used to administer a predominantly five point Likert scale questionnaire with an invitation to participate emailed to the building occupants. The quantitative data was analysed using descriptive statistical analysis. Research Findings: The key research findings revealed that the messages communicated to the occupants after the move into the building have been mainly focused on operational matters and rarely on educating occupants on the green aspects of the building. A large majority of the survey respondents were aware of the building facilities, details and required behaviour. However it was found that the occupants, Line Managers and Senior Management are not displaying the required behaviour for a green building and do not know how to use some of the building facilities. A major gap was found in communicating with people moving into the building. In addition it was found that some of the information communicated to occupants is outdated. Written communications are used extensively and face to face communication is rarely used to communicate with the occupants. As a result, a number of changes are required to improve the effectiveness of the change communications to the occupants of Barclays Towers West. The improvements include communicating to new occupants; utilising additional communication channels; focusing communication messages on educating occupants on the strategic objectives for the building; rationale for building features and facilities; how to use the facilities and the impact of their behaviour on the building objectives being achieved.
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An evaluation of the implementation of Mercedes Benz production system (MPS) and the employee change readiness at Mercedes Benz commercial vehicles South Africa

  • Authors: McAllister, Rozane Ronardo
  • Date: 2015
  • Subjects: Daimler-Benz Aktiengesellschaft , Organizational change -- South Africa , Organizational behavior -- South Africa , Employees -- Attitudes , Continuous improvement process -- South Africa
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: vital:850 , http://hdl.handle.net/10962/d1017518
  • Description: The evaluation report section describes the evaluation of the implementation of Mercedes Benz Production System (MPS) at Mercedes Benz Commercial Vehicles, which is a division of Mercedes Benz South Africa’s manufacturing plant situated in East London. The section evaluates the changes the implementation of MPS brought to the Key Performance Indicators (KPI’S) of the division and evaluates the change readiness of the employees in the division prior to the change. The change implementation was initiated by the management of MBCV as a strategic organisational change to bring about continuous improvement to the KPI’s of the organisation. These KPI’s are Safety, Quality, Delivery, Cost and Morale (SQDCM). The reason behind the change at the time was deemed critical to MBCV in order to meet the annual KPI targets and remain cost competitive and sustainable. The evaluation report further describes the results of the change with regards to the organisational KPI’s and the level of employee change readiness which was conducted through a questionnaire survey. A brief literature review is included in the Evaluation Report under section one describing key concepts about Production Systems, Lean Manufacturing and Change Management. The evaluation section includes recommendations based on the results of the research findings and ends with a conclusion. The literature review section explores the literature that supports production systems, lean manufacturing and change management concepts, its definitions, importance and benefits. The literature review describes and critiques key concepts of the research such as productions systems, MPS in particular, lean manufacturing concepts and related change management topics relevant to the research. The literature review defines production systems and the concepts of lean manufacturing, highlighting the benefits of the concepts to enhance organisations’ manufacturing capabilities. An integrated part of lean manufacturing is people and the implementation of lean manufacturing into an organisation requires change management theories therefore key understanding in this particular research was to discuss change management concepts, in particular, employee change readiness. The literature will discuss different tools to assess employee change readiness and from this develop an employee change readiness tool. The change management concepts evaluated change readiness and the consequences if organisations are not ready for change. The research methodology section describes how that the research was conducted in two phases, one to evaluate the implementation of MPS with regards to the organisational KPI’s (SQDCM). This was assessed through reports from projects and presentations made by the project teams on improvements of the organisational KPI’s. The second phase evaluated the change readiness of the employees prior to the implementation of MPS. This phase of the research was intended to retrieve quantitative data with an adapted questionnaire which was distributed to employees. To evaluate the change readiness, a change model known as ADKAR was used as an evaluation instrument. The modified ADKAR questionnaire was distributed to employees in hard copies and completed during a weekly team meeting. The results were summarised and descriptive statistics were used to analyse the final results. Microsoft Excel (2010 version) was used to illustrate and display the graphs. Section three discussed the research methodology in more detail. The study shows that although there were some positive changes that came from the implementation of MPS in MBCV, especially to the following KPI’s (Safety, Quality, Delivery and Cost), real consideration should be given to employee morale and the level of change readiness of MBCV employees.
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An evaluation of the potential for implementing adaptive co-management in the Waodani social-ecological system in the Ecuadorian Amazon

  • Authors: Bryja, Malgorzata Anna
  • Date: 2015
  • Subjects: Adaptive natural resource management -- Ecuador -- Reserva de Biosfera Yasuni , Huao Indians -- Ecuador -- Reserva de Biosfera Yasuni , Natural resources -- Co-management -- Ecuador -- Reserva de Biosfera Yasuni , Social ecology -- Ecuador -- Reserva de Biosfera Yasuni , Sustainable development -- Ecuador -- Reserva de Biosfera Yasuni , Resource-based communities -- Ecuador -- Reserva de Biosfera Yasuni , Reserva de Biosfera Yasuni (Ecuador) -- Economic conditions , Huao Indians -- Ecuador -- Reserva de Biosfera Yasuni -- Economic conditions
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:4784 , http://hdl.handle.net/10962/d1018192
  • Description: Adaptive co-management (ACM), one of the most prominent management approaches to emerge in the recent years, combines iterative learning, flexibility, and adaptation promoted by adaptive management with the principles of nurturing diversity and fostering collaboration among different partners that underpin co-management philosophy. ACM has been proposed as an approach to address the deficiencies of centralized management in ensuring sustainability of social-ecological systems (SESs) in face of future uncertainties. This thesis aims to evaluate the readiness of resource users (the Waodani) as well as external actors (the Ecuadorian State and NGOs) for future implementation of ACM and thus enhancing the long-term social-ecological sustainability of the Waodani SES located in the Yasuni Biosphere Reserve in the Ecuadorian Amazon. Qualitative data obtained by means of focus groups with the Waodani and individual interviews with external actors and Waodani leaders revealed different levels of readiness for ACM. Firstly, in the case of the Waodani, the insufficient fulfillment of some conditions required for successful ACM as well as intercommunity differences in regards to these conditions can complicate the implementation of ACM, unless sufficient external assistance is offered to the SES. The analysis of NGOs demonstrated, on the other hand, a relative readiness for ACM, providing that such aspects as sufficient funding, long-term commitment to collaboration, and inter-institutional linkages are strengthened. The study also found that the Ecuadorian government’s potential to contribute to ACM is hindered by the lack of readiness to work with the indigenous society as well as by funding and communication challenges. Furthermore, the resource based economy supported by the State limits the scope of innovation and adaptation. Still, as in the case of other actors, overcoming the challenges and transitioning towards adaptive governance and thus ACM could be possible in the long-term, if recent legal and political changes are truly implemented.
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An examination of the Mobisam project and Grocott's Mail : towards mobile social accountability monitoring in Grahamstown

  • Authors: Reinecke, Romi Kami
  • Date: 2015
  • Subjects: Grocott's Mail (Grahamstown, South Africa) , Electronic discussion groups -- South Africa -- Grahamstown , Citizen journalism -- South Africa -- Grahamstown , Municipal services -- South Africa -- Grahamstown , Government accountability -- South Africa -- Grahamstown , Social action -- South Africa -- Grahamstown , Municipal services -- Citizen participation , Municipal government -- South Africa -- Grahamstown
  • Language: English
  • Type: Thesis , Masters , MSocSc
  • Identifier: vital:3541 , http://hdl.handle.net/10962/d1017782
  • Description: This thesis critically examines the nature and purpose of the MobiSAM partnership, in relation to its value as a model resonating with normative theories on the role of the media in South African democratic society. The MobiSAM project introduces a mobile polling application, designed for citizens to provide real-time, user-generated data on crucial municipal service delivery such as clean water in Grahamstown, Eastern Cape, South Africa. The project has partnered with the local community newspaper, Grocott's Mail, to broadcast this data, with the aim to facilitate citizen participation in public problem solving and support local government accountability in service delivery. Despite pervasive poverty in areas such as the Eastern Cape, mobile penetration in South Africa is near universal. The MobiSAM partnership is an ongoing effort to forge new links between social accountability monitors, new media, traditional media, citizens and local government around public issues in Grahamstown, in line with the development objectives of the post-apartheid South African state. The overall theoretical framework for this thesis is taken from Christians, Glasser, McQuail, Nordenstreng and White's Normative Theories of the Media, which provides an analysis of four roles of the media in a democratic society, that is: the monitorial, the facilitative, the radical and the collaborative roles. Within each of these roles, the stated journalistic approach is explored, that is investigative journalism, public journalism, radical journalism and development journalism. Public journalism is focused on as having the most resonance with the goals of the MobiSAM partnership. The chosen research design is a critical realist case study with the selected methods of thematic document analysis and, primarily, in-depth interviews with key project participants. The research goals were to analyse this primary data against the normative theory on the role of the media in a democratic society, and the 'real world' constraints posed by the project’s specific political and socioeconomic context. The findings conclude by offering certain recommendations and areas for further research, such as the central importance of a dedicated municipal reporter for covering complex public issues. This critical realist case study, drawing on qualitative interviews with both the accountability monitors and the media practitioners, interrogates the philosophical understandings on the role of the media in this new project, towards an empirical model for advancing substantive socio-economic change through media in South Africa.
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An exploration into the conditions enabling and constraining the implementation of quality assurance in higher education: the case of a small comprehensive university in South Africa

  • Authors: Masehela, Langutani Meriam
  • Date: 2015
  • Subjects: University of Venda -- Evaluation , Education, Higher -- South Africa -- Evaluation , Universities and colleges -- South Africa -- Auditing , Quality assurance -- South Africa , Quality assurance -- Standards -- South Africa , Universities and colleges -- South Africa -- Evaluation , Educational accountability -- South Africa , Education, Higher -- Standards -- South Africa , Educational evaluation -- South Africa , Critical realism , Social realism
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:1334 , http://hdl.handle.net/10962/d1020312
  • Description: At an international level, demands for accountability in respect of the quality of teaching and learning in higher education are increasing. This is also the case in South Africa. The response to these demands has taken the form of the introduction of quality assurance systems to higher education. In South Africa, a formal national external quality assurance was introduced to the higher education system in 2001 as a result of the establishment of the Higher Education Quality Committee. The Higher Education Quality Committee is a standing committee of the South African Council on Higher Education. Like other quality assurance agencies across the world, the Higher Education Quality Committee has the responsibility for i) auditing institutions of higher education and ii) accrediting learning programmes. The first cycle of institutional audits ran from 2004 until 2011. As quality assurance was introduced to the higher education system and the first cycle of institutional audits began, universities in South Africa developed policies and procedures intended to assure quality in three areas of their core functioning: research, teaching and learning and community engagement. The University of Venda, which is the focus of the study on which this thesis is based, was no exception. As a practitioner in the Centre for Higher Education Teaching and Learning at The University of Venda, it was my observation that the policies and procedures intended to assure quality in teaching and learning were not always implemented by academic staff members. This was in spite of poor student performance data which raised questions about the quality of the teaching and learning processes in place. The study underpinning this thesis was designed to explore this phenomenon. More specifically, it aimed to identify the conditions enabling and constraining the implementation of policies and procedures in two Schools in the University: the School of Health Sciences and the School of Human and Social Sciences. In order to explore these conditions, I adopted Roy Bhaskar’s Critical Realism as an under-labouring philosophy for the study. Critical realism posits a view of reality comprising three strata, none of which can be reducible to the other. The first of these strata is termed the level of the Empirical and consists of the experiences and observations which become apparent to us through the senses. The second layer, the Actual, consists of events from which these experiences and observations emerge. Underpinning both of these layers is a further layer, the Real, which is not accessible by empirical means and which consists of structures and mechanisms which generate both events at the level of the Actual and experiences and observation at the level of the Empirical. The design of my study sought to reach this deepest layer of reality to identify these mechanisms. Bhaskar’s critical realism is philosophy which needs to be operationalized using substantive, or explanatory, theory. For this purpose, I drew on Margaret Archer’s social realism. The design on my study drew on case study methodology and involved in-depth interviews with members of the two Schools which each formed cases within the more overarching case of the University itself. In addition to these interviews, I analysed a range of institutional documents related to the assurance of quality in teaching and learning. The exploration of enabling and constraining conditions at the level of the Real allow me to make a series of recommendations in the final Chapter of my thesis intended to enhance the quality assurance system introduced to the University.
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